The parts of the guitar and why they matter
Okay. Before we tune anything, you need to know what you're holding. Not the whole encyclopedia, just enough that when I say "check your nut" or "watch the bridge" you're not lost.
Here's the thing about learning the parts. It feels like the boring stuff. It is the boring stuff. But I bought a beginner method book my first month playing and blew through the whole thing in about ten days, because it was all songs and shortcuts and felt great. Then I hit a wall for months. Turned out the book never made me learn the actual mechanics underneath, so I had no way to fix anything when it went wrong. I just had memorized shapes with no idea why they worked. So we're doing this part first, and we're doing it right, even though it's not the fun part yet.
The body
The big curvy part. If you've got an acoustic, this is a hollow box and it's doing all the work of making the string vibration into actual sound you can hear across a room. Electric guitars don't need this the same way, they lean on pickups instead, but most of you are starting on acoustic so that's what we'll talk about.
Inside that hole is the soundhole. Don't worry about what's happening in there structurally, just know that's where the sound is coming out from, and it matters where you strum relative to it.
The flat part the strings stretch across, down by your belly, is the bridge. The strings are anchored there with little pegs called bridge pins. This is a stress point. If your guitar's been sitting in a hot garage or a cold trunk for months, check the bridge before you check anything else. Wood moves.
The neck and the fretboard
The long skinny part you're holding with your other hand is the neck. Running down the front of it is the fretboard, and the metal strips crossing it are frets. Frets are what let you shorten the string to change the pitch. Press down behind a fret, not on top of it, that's super important and I'll say it again in week two because everybody forgets.
At the very top of the neck, where it meets the tuning pegs, is the nut. Small groove-cut piece, usually plastic or bone. It's easy to ignore and it's actually a big deal, because it sets the string spacing and the string height right where you're fretting the most. A worn or badly cut nut is a common reason a cheap guitar buzzes no matter what you do.
The headstock and tuners
At the top, the headstock, with the tuning pegs (also called machine heads). Turn these to change string tension, which changes pitch. Tighter is higher, looser is lower. We'll use these every single class, first thing, before we play a note. Your guitar drifts out of tune just sitting there, especially with our dry air and however many degrees it swings between your car and your house. That's not a maybe. It's why we tune first, always. I don't teach a note until the room's in tune, because a beginner playing an out-of-tune guitar just thinks they sound bad, and they don't, the guitar's lying to them.
The strings
Six of them, thickest to thinnest, low to high in pitch. We'll get into names next lesson. For now just notice they're not the same thickness and that matters for how hard you press and how they feel under your fingers.
One quick safety thing
If you're tuning and something feels really wrong, tight and squeaky and not settling into pitch, stop. Don't crank a peg hoping it'll click into place. Strings under too much tension can snap, and a string snapping near your face is not fun. If it feels off, back the peg down and start over slow.
The opinion part
Here's where I'll say something I believe pretty strongly: you don't need a nice guitar for any of this. A $150 guitar that you're not afraid to bang around and actually pick up every day beats a $600 guitar sitting in the case because you're scared of it. Cheap guitars work fine for learning where every part is and how it behaves. Save the nice guitar purchase for after you know what you're doing and what you actually want.
Before next time, just handle your guitar for a few minutes. Point at the parts. Say the names out loud even if it feels dumb. It sticks faster than you'd think.